\newcolumntype{C}[1]{>{\centering}p{#1}} 
\newcolumntype{L}[1]{>{\raggedleft}p{#1}} 
\newcolumntype{C}[1]{>{\centering}p{#1}} 
\newcolumntype{L}[1]{>{\raggedleft}p{#1}} 
\small
\begin{tabularx}{\textwidth}{L{\firstColWidth{}}|C{\secondColWidth{}}|X}
\toprule
{\bf RPM Package Name} & {\bf Version} & {\bf Info/URL}  \\ 
\midrule

% <-- begin entry for mpich
mpich-gnu-ohpc &
\multirow{2}{*}{3.2.1} & 
\multirow{3}{\linewidth}{MPICH MPI implementation. \newline {\color{logoblue} \url{http://www.mpich.org}}} \\ 
mpich-gnu7-ohpc &
& \\ 
\cline{1-2} mpich-gnu8-ohpc &\multirow{1}{*}{3.3.1}
& \\ 
\hline
% <-- end entry for mpich

% <-- begin entry for openmpi
openmpi-gnu-ohpc &
\multirow{2}{*}{1.10.7} & 
\multirow{2}{\linewidth}{A powerful implementation of MPI. \newline {\color{logoblue} \url{http://www.open-mpi.org}}} \\ 
openmpi-gnu7-ohpc &
& \\ 
\hline
% <-- end entry for openmpi

% <-- begin entry for openmpi3
openmpi3-gnu7-ohpc &
\multirow{2}{*}{3.1.0} & 
\multirow{4}{\linewidth}{A powerful implementation of MPI. \newline {\color{logoblue} \url{http://www.open-mpi.org}}} \\ 
openmpi3-pmix-slurm-gnu7-ohpc &
& \\ 
\cline{1-2} openmpi3-gnu8-ohpc &\multirow{2}{*}{3.1.4}
& \\ 
openmpi3-pmix-slurm-gnu8-ohpc &
& \\ 
\hline
% <-- end entry for openmpi3

\bottomrule
\end{tabularx}
